Floor and ceiling construction.



H. L. LEWEN. I FLOOR AND GEILING CONSTRUCTION.

I APPLICATION FILED JULY 12, 1911.

'4 sums-sum" 1.

Patented Jan.9,1912. 1

H. L. LEWEN. FLOOR AND CEILING CONSTRUCTION.

APPLICATION FILED JULY 12, 1911. 1 1,014,157. 1 Patented Jan. 9, 1912.

4 SHEETS-SHEET 2.

H. L. LEW-EN. FLOOR AND CEILING GONSTRUOTION.

APPLICATION FILED JULY 12 1911 Patented Jan.9, 1912.

4 SHEETS-SHEET 3.

H. L. LEWEN. FLOOR AND GEILING CONSTRUCTION.

' APPLICATION FILED JULY 12, 1911. 1,014,157, Patented Jan.9, 1912.

4 SHEETS-SHEET 4.

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,UNITE STATES PATENT OFFICE.

nanny L. IiEWEN, -01 NEW YORK, N.' Y.

i rnoo tnivn CEILING CONSTRUCTION.

To all whom it may concern:

' Be it known thatI, HENRY LEWEN, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain and combinations of parts which Iwill her salient feature of my invention. Fig. 2 is a inafter describe and claim. f

' vIn the accompanying drawings forming art of this specification and in which similar' reference characters. indicate likeparts in the several views, Figure l is a perspective view part-1y broken away, of a floorand ceiling construction embodying 'the similar viewshowing a reinforcing element 'of slightly modified form. 3.is a similar view showing the application to the re inforcing element of a transverse clip 'ar-' rangement. Fig. 4 illustrates a sectional detail of a concrete floor and hanging ceiling showing reinforcing clip extending between the same, and engaged by tension rods. Fig. 5 is a clip of slightly modified form. Fig.1 6 illustrates; a ribbed reinforcing element and clip, said element being provided with a supplementalhollow rib to receive a fireroof ceiling board. Fig. 7 is a modified orm of supplemental hollow rib. Fig. 8 is a perspective view of a clip for fastening the ribbed sheet-s together, showing a reinforcing means. 3

In carrying out my invention Ipreferto use the same in connection with an I-beam, A, or other supporting member upon which the main reinforcing element, 3, ma be supported in any of the ways hereina ter men-'-. ,tioned, or in any desired manner. The rein-* forcing element, 3, is preferably in the form of a sheet-metal plate rolled orotherwise provided with hollow ribs, 4, which are made to project at right-angles from one side of the plate and which ribs are arranged in parallel order and are connected by an intervening substantially straight flat portion, 5, in a manner substantially asdisclosed in my former application, Ser. No. 571,743,

Specification of Letters Patent. Application filed linly 12, 1911. Serial No. 638,085.-

filed Jul ment di ers, however, from the like element of theaforesaid application in that the plain portions, 5, of the. plate which lie intermediate of the. hollow ribs, 4, is'provided with slots, 6, formed by slitting portionsof the plate at'two opposite points and bending the slitted portions outwardly, as shown at 7 the slits may extend lengthwise of theplate and they may be arranged in rows par- Patented Jam-9,1912.

I 13, 1910. This reinforcing ele allel with the ribs, 4, or they may be other- .wise arranged without departing from the spirit of the invention. The slits may, also, 'extendftransversely of the portion of the plate between adjacent parallel ribs or said slits may extend both. longitudinally and transversely, as clearly shown in the pres-' ent drawings. Whatever the arrangement and character of the slits, the essential feature is the expandingor bending out of the portion formed by the slits so as to form lower projections on the plate adapted 'to serve as binding means for the engagement ofthe plaster. which is to form; the ceiling of the structure. Y

My present invent'ion incasing of the I-beam, or other support, in

c'oncrete-and to this end I provide 'a reinforcing. element which extends from the aforesaid plates downwardly and under the I-beam, the arrangement being such that open spaces, 9, are left at the top into which comprehen ds the r the concrete may be placed to thereby embed the aforesaid beam.

In F i 1 I show an arrangement wherein the longitudinal hollow ribs, 4, are arranged parallel with each other and the portions of the plates. adjacent the I-beam areslitted at the bases of the ribs so that the ribs may extend over, or bridge the space, 9, andrest on the top flange of the beam; the slitted portions are bent downwardly at. 8, and these bent portions are also slitted in the manner before described, and are extended under the lower flange of thebeam, and secured in some appropriate manner. In Fig.

1 the construction includes the slitting of plates upon each side of the I-beam and the bending of the slitted portions down along the sides of the beam and underv said beam,

the meeting edges of the plates being". brought together below the lower flange of 5 the'I-beam and being seamed together as shown at 10. By the construction disclosed 'the open spaces, 9, are left at the top between adjacent ribs and into these spaces the wet concrete may be readily poured. The bent portions of the plates thus form housings or molds for retaining the cement which embeds the beam, while the plates are supported in a substantial manner by reason of their hollow ribs extending over the upper flange of the beam and overlapping each other, as clearly indicated.

After thb plates are assembled in the manner shown and described, the concrete, 12, for the floor slabs is added and the ribs and plates become embedded and thereby I form a metal reinforce for the ceiling or floor construction. If desired suitable sleepers, 13, may be embedded in the surface of the concrete floor slabs upon which sleepers the usual flooring, 14, may be nailed or otherwise secured. I

If preferred, the portion of the reinforcing element which extends downwardly along the sides and beneath the I-beam may have hollow ribs, 15, extendingfrom .both sides of the plate; in other words, a ribbed construction of the. type shown in my former Patent No. 986,474, March 14/11, may be employed. In this instance the part of the element, 16, which incases the lower part of the I-beam may be made separate from the reinforcing plates, 3, before men tioned and may have its edges interlocked or suitably connected to the corresponding edges of the first mentionedv reinforcing plate, as shown at 17, in Fig. 2. In this figure, it will also be seen that the hollow reinforcing ribs, 4, of the main plates do not extend over the top flange of the I-beam,

but project under said flange and this may be effected without departure from my invention; in which case, also, the openings are left at the top between the hollow ribs for the admission of the concrete. material.

In the construction shown in Fig. 2 I

may also find it desirable to employ the interlaced tension wires, 18, which pass through openings in the apices of the ribs,

17, and which ribs extend lengthwise of.

the plate and accordingly lengthwise of the I-beam and at right-angles to the ribs of the first-mentioned plates, 3. When employin'g the tension wires, 17, as in Fig. 2,

also prefer to use tension rods, 19, which extend lengthwise of and between the hollow ribs, 3, of the first-mentioned plate, the inner ends of these tension rods hooking over the top flange of the I-beam, said tension rods serving as supports for the tension wires, whereby the separate ribbed plate,

16, which incases the lower portion of the I- beam may be supported in position from the tension ribs. I v

When using the construction shown in Fig. 2, the ribbed plate, 16, which incases the lower portion ,of the I-beam may not be slitted with portions bent outwardly as in Fig. 1, as the double-ribbed arrangement of the plate will provide keys on the outer surface for the plastering, which may be placed over the outside of the plate to thereby form a finish for the'ceiling. In either of the constructions shown it will be apparent that a plank may be placed across the top of the hollow ribs to be used as a scaffold for workmen to carry the wet mixture pend upon the span and the live-load of the floor slabs, as will be indicated by tables of information usually supplied and which are familiar to those skilled in this art.

The slitted portions'of the main plates and the bending outwardly of the portions,

' 7, between the slits may be so arrangedthat the concrete will not pass entirely through the slots thus formed, accordingly there will remain projections on the outer surface of the plate for a binding for the plastering which is to form the ceiling 9f the proposed structure, this being a leading feature of my invention.

In Fig. 3, I show in connection with the perforated and ribbed plates before mentioned a novel form of clip, 20, consisting of a strip which extends across the upper 'portion of the\plates, said strips being bent into arched form, as in Figs. 3 and 6, and slitted longitudinally at the top and bottom and with the slitted portions bent in oppo-,

site directions. The slitted portions at the bottom of the clip .form forks, 21, which are made to straddle the upper portion of the hollow ribs, and the slitted portions at the top of the clip have their ends welded at 20 or otherwise rigidly connected in line clips being designed'to be embedded in the concrete floor slabs in the same manner that the hollow ribs are embedded. The clips are spaced apart at certain intervals, say

from six to twelve inches apart so as to give additional reinforcement for the concrete floor slabs, and to act as tensionimembers and to be fastened to the tension rods, 19,

in any manner which may seem est for the purpose. I I

In each of the instances heretofore men- 'tioned- I have disclosed a building element with a hollow ribbed surface of the general type disclosed in my prior application; I may, however, fashion this plate jwlth a further rib or ribs of a special form asshown at 22, in Fig. 6, this additional rib I projecting-from one side of the" plate say from the side opposite to that containing 110 to make a continuous reinforcement, said 22-, being provided'with-grooves in its adapted to receive edgewise a fire-proof board, 23, which is designed to form a ceil-' ing; this board because of the projection of the hollow additional rib, 22, is held spacedfrom the ribbed element, 3, a suflicient distance to form an air-chamber between thefire-proof board and said element. v The ad ditional hollow rib may have its outer grooved portion integral with the rib, to form a molding, 24, or, if desired, the rib may be used in association with a separate molding, 25, which will be secured to the rib by means of a screw, 28,'orother fastening, as shown in Fig. 7 In either instance the fire-proof boards have their adjacent edges fitted in the groovesof this special hollow rib and the'space between the boards and the main ribbed element forms an air chamher as before described. The separate molding, 25, or the corresponding integral molding, 24-, of the hollowrib, as wellas the hol.

low rib itself, may be filled at the same time i that the slab is formed, by introducing the concrete through the openings formed be- '-tween the ribs of the main plates as before mentioned. These parts may be filled first 30. with a special asbestos composition. so as to enable the thread of the screw, 28, to en ter the composition. A

The clip construct-ion shown in Figs. 4 and 5 is designed particularly for use in con nection with upper and lower reinforcing elements in the form 'of plates with projecting hollow ribs,-as illustrated in Fig. 4. In this figure one of the reinforcing elements, 3, has its ribs embedded in the concrete floor,

J while the other reinforcing element, 3', is

I from its inner surface.

suspended a suitable distancefrom the first member and has .the hollow ribs projecting Between the ribs of the two reinforcing elements, 3, 3', extends the clip, 30, which clip is composed of a sheet of metal having its ends splitand bent in opposite directions and made to substantially conform to the cross sectional character of the rib. The split or forked end of 56 the clip may enter the hollow rib of the up per remforcing element, 3, as shown in Fig. 4, while the split or forked lower end of the clip may be made to pass around the outside of or straddle the rib of theplower reinforcing element, 3'. If -desired, the-split or forked opposite ends of the clip may pass upon the outside of the ribs of both the upper and reinforcing elements, as shown in Fig. 5, but in any event the split ends of the plate will be bent to substantially conform to the. cross sectional shape of the head of the rib. The clips are placed in parallel order at suitable distances apart and'have' their central portions slit-ted and bent to form an eye through which passes a tension rod, 31, and which rod. may be fastened to an I- tion as the plate, 3, and is connected to the latter by the clip, 31, before mentioned, which clip has the perforation for the tension rod, 31, before mentioned. The clip,

.20,- Fig. 3, acts as an additional reinforcement for the floor slab and its ends are welded sidewi'se to anadjoining clip and the extremities of these welded portions will be bent in opposite directions to form the forks ada ted to engage and anchor onto the hollow ri before mentioned. The clip, 30,

will also be found desirable for fastening the two ribbed sheets together to form. a mold for the wet concrete, for wall construction or for columns or piers, but it is especially'useful for the hanging ceiling construction before mentioned and as shown in Fig. 4. a

Having thus described my invention what -I claim as new and'desire to secure by Letters Patent is 1. In a ceiling and floor construction, a building element comprising a metal plate with I projecting ribs running lengthwise thereof, said plate being slitted adjacent the bases of the ribs and the slitted portions bent to one side so as to leave the ribs projecting beyond the bent portion of the plates.

2. In a ceiling and floor construction, a building element comprising a. metal plate with projecting ribs running lengthwise thereof,- said plate being slitted adjacent the bases of the ribs and the slitted portions bent to one side. so as to leave the ribs projecting beyond the bent-portion .ofthe plates, the portion of -the plates intermediate of the. ribs being slitted with portions offset from theouter surface of the plate to form holding means for plastering. In ceiling and floor construction, the combination with a flanged beam, of a building element comprising a metal plate fashioned with hollow ribs which project from the surface thereof and extend along theplate in parallelorder, said plate being slitted from the end inwardly whereby the ribs project and overlap the beam and the slitted portions of the plate may be bent downwardly relatively to the beam, to provide openings for the admission of concrete'material, said element being continued over the sides and beneath the beam to form a moldto enable the beam to be embedded in concrete, tension rods engaging the.beam and extending substantially parallel with the 4. In a ceiling and floor construction, the

ribs, and tension wires passing around the combination with a flanged beam, of a build-- ing element comprising a metal plate fashioned with hollow ribs which project from the surface thereof' and extend along the plate in parallel order, said plate being slitted from the end inwardly whereby the ribs project and overlap the beam and the slitted portions ofthe plate may be bent downwardly relatively to the beam, to propended from said rods, said plates being slitted at numerous points intermediate of the ribs with the slitted portions expanded outwardly to form holding means for plastering, and said ribs and tension rods adapted to be embedded in concrete.

5. In a ceilingand floor construction, the combination with a beam of -a buildin ment inclosing the lower portion 0% the beam, said element being fashioned with hollow ribs which project from the surface and said element being slitted in parallel lines to allow portions of the ribs to be bent to one side and to afford open spaces for the reception of concrete by which the beam is embedded, and means suspending the plate from the beam, said plate being slitted inter.

mediate of the ribs with the slit-ted portions expanded outwardly to form binding means for the reception of plastering.

' 6. A building element comprising a metal plate fashioned with projecting ribs running lengthwise of the plate and extending from the surface thereof, said late beii 0' slitted at points intermediate of t e ribs and the-slitted portions expanded outwardly to form binding means for an exterior coating ofplaster, said ribs project-ing beyond the plate at, the end and adapted to be embeded inconcrete, and a support for the projecting ends of the ribs.

7. In ceiling and floor construction, the combinationwith a supporting beam, of a building element comprising a sheet metal ele-' plate having ribs projecting from the surthe end and said plate being bent to pass around and inclose the sides and bottom of the beam to'thereby form a mold for material admitted through openings at the top between, the beam and bent portion of the the beam. .7

8. In a floor construction, the combina-, tion with a supporting beam, of a building element comprising a sheet metal plate fashioned"= with hollow ribs which project from adapted to straddle said ribs, said slip and ribs adapted to be embedded in concrete.

tion with a supporting beam, of a building element comprising a sheet metal plate fashioned with hollow ribs which project from the surface thereof, said plate being slitted. from the end inwardly and the slitted portions bent to one side to allow the ribs to project and to formopenings at the top for a strip of metal slitted longitudinally and with the slitted portions bent in opposite directions and fashioned to substantially conform to the cross section of'the ribs and adapted tostraddle said ribs, said clip and ribs adapted to be embedded in concrete, tension rods extending substantially parallel with the ribs and having hooked ends to engage the beam, and tension wires engaging the. rods and passing around the bent portion of said elements and said beam.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY L. LEWEN.

Witnesses:

W. G. KENNEDY,- I

Josrr A WAGNER.

the surface thereof, saidplate being slittedface said ribs projecting beyond the plate at plate, and means suspending the plate from form to the cross section of the ribs and 9. In a floor construction, thecombinathe admission of concrete, a clip formed of, c 

